* Chuck Swiger <[EMAIL PROTECTED]> [080220 10:35] wrote: > Hi-- > > On Feb 20, 2008, at 3:23 AM, Valerio Daelli wrote: > > 99904 total packets received > [ ... ] > > > > 61441 fragments received > > [ ... ] > > 34819 output datagrams fragmented > > 208914 fragments created > > Take a look at the level of packet fragmentation you are encountering; > yes, this is expected and things will work but there is extra latency > added when the IP stack has to reassemble packets before the data can > be delivered. Try setting the NFS rsize/wsize to 1024 or perhaps 1400 > and see whether that improves performance. > > Or, if your switch and NICs support it, see whether you can get Gb > Ethernet jumbo frames working so that you don't have to fragment for > 2K or 4K data packets....
TCP mounts do not have this problem. You can safely use 32k or higher sizes with TCP without fragmentation. -Alfred _______________________________________________ freebsd-performance@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-performance To unsubscribe, send any mail to "[EMAIL PROTECTED]"
